With evidence from model organisms and human population genetic analysis, two studies in this issue report discoveries that eukaryotic Top3β has RNA topoisomerase activity and, in a ribonucleoprotein complex with FMRP, is important for neurodevelopment and normal cognition.
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Nott, A., Tsai, LH. The Top3β way to untangle RNA. Nat Neurosci 16, 1163–1164 (2013). https://doi.org/10.1038/nn.3506
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DOI: https://doi.org/10.1038/nn.3506
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